The Samsung Galaxy Mini (S5570) can now be updated to Android 4.1.2 (Jelly Bean) using MIUI v4 custom ROM. MIUI v4 custom ROM is based on CyanogenMod 10 (CM10). Users might face some bugs since the ROM is still under development. However, interested users can still update their device using this tutorial, but IBTimes UK will not be held responsible for any damage to the device during installation.

Requirements:

Ensure the device has at least 80 percent battery charge

Make sure USB driver is installed

Enable USB debugging

Ensure the device has CWM recovery installed

Make sure the device is rooted

Back up all important data

To install MIUI v4 Jelly Bean ROM on Samsung Galaxy Mini:

Download the MIUIv4 Jelly Bean ROM to the PC and copy the same to the device's SD card

Turn the device off and boot into recovery by pressing Menu and Power buttons. The device will now enter CWM recovery

Perform a Nandroid backup (you can do so by choosing Backup and Restore > Backup

Select Wipe Data/Factory Reset and tap on Yes to confirm the action. Now, select Format/System under Mounts and Storage and then tap on Yes to confirm the action

Choose Install Zip from SD Card > Choose Zip from SD Card and then locate the MIUI file. Select the file and confirm the installation. ROM will begin installing now